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IAUC 7973: 2002fj; 2002fk; V4742 Sgr

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                                                  Circular No. 7973
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVA 2002fj IN NGC 2642
     L. A. G. Monard, Bronberg Ridge (southeast of Pretoria), S.
Africa, reports his discovery of an apparent supernova (mag 15.8)
on three unfiltered CCD images taken with a 0.30-m reflector around
Sept. 12.12 UT; additional unfiltered magnitudes from Monard:
Sept. 13.12, 15.6; 14.122, 15.5; 15.108, 15.5; 16.122, 15.6;
17.118, 15.9; 18.114, 16.2.  SN 2002fj is located at R.A. =
8h40m45s.10, Decl. = -4 07'38".5 (equinox 2002.0), which is 12"
east and 21".5 south of the center of NGC 2642 and situated near
the end of the bar and at the beginning of a spiral arm.  Nothing
appears at this location on an image taken by Monard in June
(limiting mag 17) or on Digitized Sky Survey images.  A bright
foreground star is located just to the north of the new object.

SUPERNOVA 2002fk IN NGC 1309
     Reports of the independent discoveries on unfiltered CCD
images of an apparent supernova in NGC 1309 have been received from
R. Kushida, Yatsugatake South Base Observatory (via S. Nakano,
Sumoto, Japan), and from J. Wang and Y. L. Qiu (on behalf of
Beijing Astronomical Observatory supernova survey).  A precise
position for the new object has been measured by Y. Kushida from R.
Kushida's image of Sept. 17.719 UT:  R.A. = 3h22m05s.71, Decl. =
-15o24'03".2 (equinox 2000.0), which is about 12" west and 3".5
south of the center of NGC 1309 (offset somewhat uncertain due to
difficulty in defining the nucleus center).  Magnitude estimates (K
= Kushida, W = Wang):  2000 Dec. 17, [18 (K); 2002 Feb. 6.50,
[18.0: (W); Sept. 15.84, 15.7: (W); 17.719, 15.0 (K); 17.79, 14.5:

     T. Kato, Kyoto University, reports the following prediscovery
limiting magnitudes by K. Haseda (Aichi, Japan, 0.10-m f/4 twin
patrol camera) from T-Max 400 films:  Feb. 23.490 UT, [12.8; June
18.627, [12.8.  CCD photometry by J. D. West, Mulvane, KS:  Sept.
17.095, B = 9.58; 17.101, R_c = 7.09; 17.117, V = 7.96; 18.079, V =
8.31, R_c = 7.37.  Additional visual magnitude estimates (cf. IAUC
7972):  Sept. 17.802, 8.5 (A. Kammerer, Ettlingen, Germany);
18.260, 8.4 (J. Bedient, Honolulu, HI); 18.508, 8.8 (A. Pearce,
Nedlands, W. Australia).

                      (C) Copyright 2002 CBAT
2002 September 18              (7973)            Daniel W. E. Green

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